 ... material 200 feet thick. The borings on the high ground, at the site of the locks, the regulating works, and elsewhere, showed generally soft clay to a depth of 20 to 30 feet below the surface, where indurated clay — a soft but compact rock —...  The Construction of the Panama Canal - Seite 151von William Luther Sibert, John Frank Stevens - 1915 - 339 SeitenVollansicht - Über dieses Buch
 | United States. Board of Consulting Engineers on Panama Canal - 1906 - 496 Seiten
...indurated clay — a soft but compact rock — was found. In making the design of an earth dam at Gatun, it was thought best to provide a dam which could not...would require a large force working for a long time. The cross section of the dam has been given the unprecedentedly large dimensions shown on Plate XIV.... | |
 | C. H. Forbes-Lindsay - 1906 - 430 Seiten
...the dam contemplate a structure of earth which could not be destroyed by the forces of nature and " could only be destroyed by making excavations which...would require a large force working for a long time." DIMENSIONS OF THE DAM. The top of the dam is 100 feet wide and stands 50 feet above the normal level... | |
 | United States. Board of Consulting Engineers on Panama Canal - 1906 - 504 Seiten
...indurated clay — a soft but compact rock — was found. In making the design of an earth dam at Gatun, it was thought best to provide a dam which could not be destroyed by uny of the forces of nature, and which could only be destroved by making Excavations which would require... | |
 | C. H. Forbes-Lindsay - 1910 - 586 Seiten
...solid structure, calculated to withstand the forces of nature and, as the report states, one that " could only be destroyed by making excavations which...would require a large force working for a long time." The crest of this dam, as planned, stands at 135 feet elevation, or 50 feet above the summit level... | |
 | 1906 - 282 Seiten
...indurated clay — a soft but compact rock — was found. In making the design of an earth dam at Gatun, it was thought best to provide a dam which could not...would require a large force working for a long time. The cross section of the dam has been given the unprecedentedly large dimensions shown on Plate XIV.... | |
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